Automatic adjustable chair



Od. 5, 1,948. H. GLITSMAN ETAL 2,450,654

AUTOMATIC ADJUSTABLE' CHAIR lFiled Aug. 17, 1945 2 sheets-snee; 1

INVENTORS Hmmm G Le: TSM/wv ANn AfvrEL HaEN/a Mm dan@ ATTORNEY Oct. 5,1948.

AUTOMATIC ADJUSTABLE CHAIR Filed Aug'. 17, 1945 2 Sheets-Sheet 2INVENTORS HAROLD GLe/rsfvm/v M, DAN/EL Hoen/6 B* TM @ma ATTORNEY H.GLEITSMAN ET AL 2,450,654

Patented Oct. 5, 11948 wurm STATES PATENT oFFIcE 2,450,654 AUTOMATICADJUSTABLE CHAIR Harold Gleitsman, NewYRochelle, and Daniel N.

Hoenig, St. Albans, to said Gleitsman Application August 17,

said Hoenig assignor' 1945, Serial N0. 611,048

16 Claims. (Cl. 155-119) This invention relates to automatically ad-.instable chairs.

vThe primary o ject Vof this invention is to provide a chair having aback which is automatically to different positions in response todiierent postures assumed thereon by the user of the chair.

provision of an autowhich can be folded rm for convenience in carryinginvention, but not in limitation thereof.

In the drawings:

Fig. 1 is a perspective view of a chair embodying the present invention,the back of the'chair position in which the chair is a reclining chair;

Fig. 1A is a side view of condition thereof;

Fig. 2 is a, sectional view on the line Fig. 1;

Fig. 3 is a view similar to Fig. 2 showing the position of the back ofthe chair as a back rest latter is seated on the chair in a more or lessupright position; Fig. 4 is a sectional View on the line 4,-4 of Fig. 3;

Fig. 5 is a fragmentary perspective view of one of `the sides of theseat frame of the chair;

' Fig. `1 showing anwhich are to be considered as illustrative of thethe chair in the folded "-Fig. 6 is a View similar to other form of theinvention;

'wood but, of course, can

Fig. 7 is a sectional View onthe line l-'I of Fig. 6;-

Fig. 8 is a view similar to Fig. 7 showing the Fig. 10 is a,- viewsimilar to Fig. 9 showing a modification. f

Referring now to the drawings in detail and first to the form of theinvention illustrated in Figs. 1 to 5, the chair I0 of the presentinvention comprises a seat frame I2 and 'a back frame I 4 which ismovably mounted on said seat frame. As here shown, frames l2 and I4 areformed of be formed of any other suitable material. the side memberswill be understood,

ing means may be in various other forms and need not, in itself,constitute the seat of the chair. The back frame I4 is provided with aback rest 36 which, as here shown, is formed oi canvas, but which may beformed of any other suitable material, the lower end of back 36 beingsecured to lower cross member 28 and the upper end of said back beingsecured to upper cross member 26. It will; be noted that the reary endportion of the seat. or connecting means 34 is looped around crossmember 28, as indicated at 38, of the frame I4 and is stitched to thelower end` of the back rest 36, as indicated at 49 The-back` frame I4 isprovided with a cross band 42 offabric or other suitable materiahior;supporting thel back rest 36 between the upperandlower cross members 26and 28 when the user of the chair leans against the back of the chair.ItV will be understood, however, that said band 42 may be omitted andalso that the back rest 36. Inay4 be, formed in various other ways.

When the user of thechair isyseated thereon in a more or less uprightposition,'the 'weight-olf* thauser on the seat orl connecting means34transmitted. toftheI back` iframe- I4 whereby. to.. efiiertfa` forcethereon` pivotally moves the bacl; frameforwardlyA about the axisofthefulcrnm means until'thelateral projections or;r pins 32 engagetheiorwarf'.v` endsi42 'cli-'theY companiony grooves i 30, respectively,ot' thev sidefmembers ll 6 i the seat frame I2.' In'thispositionorconf.V neeiinsmeans 34, melatten when formed eifel@- ric 'orfthe like, is bowed downwardly, along a cuneo. line' extending betweencross members, I8; 'aadf On ihevthelt haria whe`11-iheuser0fihe, chairis seated thereonin anfuprightpositionjand Wishes@ @Sisma arelnnemsiiisn n the Chain; baclfram'e I4, is"antomati'cally movedpivotally backward about the axis of "the,v fulcrum means,constituted-,bv cross 22 iniesponse' to .member the pressure exertedbythemser` on` the back oi thechair in assunn Thisbakwafd-mqvemsnt of; thebask; frame I4; to ,its reclining position is facilita tedbyr the natcuial shifting' of` the A users body forgwardly, Qi the. seat 34vwhilepressing i against the. bach; restsgot theirrrlef- I4 this ,fPfWard'Siftiaa mevsmentf the users body res ,Y @tine in easies- Qf. maigres,which opposes the. backwardl movement othe, bfack frame I `4- bythepressure. o f thefnsersfbaclr.: thereon. Hovevlzy ii; will@understood-that; so, nos., als' the iserjpurvoselr @enseigner-forceOnithebakf the Chariot iiltinailie samebale wardly than isf: exerted bythe.V user .onf the seat. orf'connecting means 34 i"or` holdingtheslatera'l extensions or pins 32 in `their positions attire,` fiiwardends of the companion. grooves `3l), occurs whenthe'uservishes,iQ-,shadesrpmaslt ting .position to a. recliningypositionpn' Vthe chair, the back @i the, Chair is, autqmatiallvimovedbakwardiyfto a position in vanuit-,provides al back, rest. for the.user, in theilatters, realising: pos'ioily TP?, operati@ 0f, fthliir-#Cen? 319.11. clily understood from the fact that. w'lfienvtlxiel chair isunoccupied and the,bachrtl'iereoiislin,itslfor, ward position theseat orconnecting means` 34 isl slack, while, on. the other. hand, whenthebacl, frame' isl in its rear position, the ,seat or 'oo nr'ieot-V ingmeans 34,is,less slack or maybe,`taut. V Thus,l thej connecting means 34has' rear., planar extensibility andV 'c ontraetabiiity, whereby theback oftheichair.l is, movablefroinA a; "forward positionv to fabackward position response. to pressure of the. userslbak thereonwhenfthe user. correspondingly'. alters hissng a* reclining post urefthereont fabric and in various other ways.

Ii desired, the grooves 42 may be so designed that the rear ends 44thereof are located so that they are engaged by the lateral projections32 when thebaclr frame is in its rearmost position,

but as shovvn, this is not essential since the backwardmovementof theback frame I4 can be limited by the tension of the connecting means orseat 3 4l oncross member 28. It will be observed that the lower endportions of the side members 2 4, which pivotally engage the crossmember or iulcrumV inean`s'22 also have a sliding engagement with.y saidcross member, transversely' thereof,

sine the bachv framev I`,4. moves',upwardl`y, whileit, is being movedrearwardly',` In this connection, itwill, be observed, that theintermediate :pertionfV 4G of the lower edge oi each groove `42isecn/ted.' upwardly from the forward` edge, portion1 48 of saidgroovefor, the ypurposeofiA prgovidinga degree ofresistance to releasably(oppose, thefbackwarnd, movement of the baci; traine 'Igijfrom'itsjforward position, whereby theuser, of-,the chair..isn-.equinedll toexert theproper arnourn--of p` is sure,there,'on in orderfto move theback, frame rearwardly when, theusel" wshsfwessvme amenities positionedthe chair.` 'Itjwill be understood'that theneedQ fprthe user thus'toAconsciously dndpuippsfllllyl press uponthe back of theehainwhenhe,wishes to assume a reclining positionl thereon, prevents inadvertentbackwardfmovenient, of, 'thel`v hack' frame I 4, when the userV intends;to, sitting positionwithhis baci;l resting agains back of the chair. Itwill be Anoted` thatthesupperf, edseportion Qsroove, 391sreoessdgasidicaied at; 511, to provide, .Clear-arfr, 'andavfiid binding`of; the fivmpanion lateral extension. 3,2, inthe. ferr" ward endy of'vsaidgroove when the user 'leans against the back frame I4 initsforwardposition inorder totllt the,sameb'aclfgwafrds It will beobservedl'that, aslshwn tithe'.

in Fig.) LA,

` the chair I0 is foldable, iorconvenience Tin' car-ry.-

af.' limited-liront to, 70`

T5, tubular metal stock, anding or shipping, this` being permitted by'ltherelea'sable engagement of tlfie side members 24 of the back .framewith thelcros's member or fulcr-um means 22 'and-by thepivotaliengagementtcfithe. lateral extensions orpins 32s.ofl-lthe'back'framel with the side member I6 of theseatiframeiinthecompanion, grooves 30;, thereof; In. this connection, it;V will .beunderstood-,that .pinsZ-v are .prei-t, erably o: Circular`peripheralcont,our-sto. facilitate the pivotal movement of said pinsinthescom,. panion grooves. Asvheregshown, thalQWer Qirts of the sidemembers IS of the seatframeaifpmf,

videdwithuteouts ornandfonenipesezto facili- A tate the carrying of thechair when the lattenisi inits@1aed-,Condition- Rl ngi-HCW insita@ Fissiff/919,11 will the Chair mA embaiiesfiasamauaderlv and: principles of;train-festiva asentadas il@ form of the chair I0 illustrated in Figs. lto d5, hereinbeiore .desc ibed. Inthisforrniof; the Vi x essaiesWebalia.

back 'framdlMi "are form remain in, a Y

which corresponds to the cross member 22 and which, like the latter,provides fulcrum,means the side members of the back frame |4A, isintegral with the sides IGA of the seat frame 12A. The cross member |8Awhich corresponds to the cross member I8 of chair IU cross member 28Awhich cross member 28 of chair l0 is similarly provided with lateralextensions or pins 32A which engage the side members of the seat frame.|2A' in grooves 30A which correspond to the grooves 30 corresponds tothe lower bers 54 thereto. However, as illustrated in Fig. 10, theseparate members the grooves 30A may be flattened end portions meanscross band 42, respectively, of chair I0. It will be understood thatchair IBA operates in the same way as chair I as described above.

kIt is apparent that chairs of the present infering Iwith thefront-to-rear extensible and contractible characteristic of theconnecting means as described above.

Finally, it will be understood that various other changes in the detailsof construction and of the appended claims.

ther it will be understood that, as usedv in the aims, the term chairincludes within itsY position or in a position for ina recliningposition.

Having thus described our invention, what We claim and desire to secureby Letters Patent is: i 1. An automatically adjustable chair comprisingav seat frame having spaced connected side members, a movable back tionwhile supported on the chair.

3. An automatically adjustable chair comprising a seat frame havingspaced connected side back frame about said axis.

5. An automatically adjustable chair comprising a. seat frame havingspaced. connectedside membersa movable back frame betweenlsaid sideenibier t 10 said back frame at a point on the latter above their rear15. An automatically adjustable chair comprisoves, said in said groovesand movable therein longitudiont to rear plane connectthereof, said seatframe having a cross member eleasable ref V irst mentioned cross member,said sides of the ned @FOSS ICjd 35 rear portions thereof, said groovesextending al grooves in their rear 40 frame in said grooves on saidedges, means anof said grooves, said sliding and pivotal movementsthereof on said fanSVelSely thereof on which said back frame has apivotal engage- CIOSS member at the ment below said connecting meanssaid back means hal/111g e 11mframe being movable toward the forwardends i Fear Plane COHHeCP- 50 of said grooves by the force of the weightof the red to provide releassaid grooves Y grooves toward the HAROLDGLEITSMAN.

DANIEL .HOENIC me backwardly REFERENCES CITED rst mentioned Thefollowing references are of record in the me being dsem file of thispatent: ned cross meni- UNITED STA'I'ES PATENTS K Number Name Date t322,943 Large t July 28, 1885 Y adJuSt-eble @half @Omplls- 1,968,333cross et ai. July 31, 1934 es in their rear FOREIGN PATENTS ck framehaving Number Country Date gaging said sides 309,647 Italy July 12, 1933

